diff --git a/.env.dev b/.env.dev
index 04e48005..7766d317 100644
--- a/.env.dev
+++ b/.env.dev
@@ -24,3 +24,6 @@ WHITE_LIST[] = v1/user/captcha
 # 不需记录日志的接口
 [ADMIN_API]
 IGNORE_LOGGING_LIST[] = v1/OperateLog/index
+MAX_IMAGE_SIZE = 5mb # 图片上传最大限制
+MAX_VIDEO_SIZE = 150mb # 视频上传最大限制
+MAX_ATTACHMENT_SIZE = 100mb # 附件上传最大限制
diff --git a/app/admin/common.php b/app/admin/common.php
index 0e40ab3f..3152587f 100644
--- a/app/admin/common.php
+++ b/app/admin/common.php
@@ -94,4 +94,42 @@ if (!function_exists('xlsx_writer')) {
         ]);
         return $response;
     }
+}
+
+if (!function_exists('strtobytes')) {
+
+    /**
+     * 字符串转字节
+     * @param string $str_size 字符串 例：'1MB' '2GB'
+     * @return int
+     */
+    function strtobytes(string $str_size): int
+    {
+        preg_match('/(\d+)(\w+)/', $str_size, $matches);
+        if (!isset($matches[1])) {
+            throw new \Exception('请确认size大小');
+        }
+        if (!isset($matches[2])) {
+            throw new \Exception('请确认单位');
+        }
+
+        $size = intval($matches[1]);
+        $unit = $matches[2];
+        switch (strtolower($unit)) {
+            case 'kb':
+                $size *= 1024;
+                break;
+            case 'mb': 
+                $size *= 1024 * 1024;
+                break;
+            case 'gb': 
+                $size *= 1024 * 1024 * 1024;
+                break;
+            case 'tb':
+                $size *= 1024 * 1024 * 1024 * 1024;
+            default: 
+                throw new \Exception('不支持[' . $unit . ']单位');
+        }
+        return $size;
+    }
 }
\ No newline at end of file
diff --git a/app/admin/controller/v1/Upload.php b/app/admin/controller/v1/Upload.php
index 762e729b..1e06ece7 100644
--- a/app/admin/controller/v1/Upload.php
+++ b/app/admin/controller/v1/Upload.php
@@ -27,9 +27,10 @@ class Upload
         }
 
         try {
+            $max_size = strtobytes(env('ADMIN_API.MAX_IMAGE_SIZE', '1mb'));
             $validate = validate([
                 'module' => 'require|max:64',
-                'image'  => 'fileSize:1048576|fileExt:jpg,jpeg,png,gif'
+                'image'  => "fileSize:$max_size|fileExt:jpg,jpeg,png,gif"
             ]);
             if (!$validate->check(['module' => $param['module'], 'image' => $file])) {
                 return error($validate->getError());
@@ -94,9 +95,10 @@ class Upload
         }
 
         try {
+            $max_size = strtobytes(env('ADMIN_API.MAX_VIDEO_SIZE', '100mb'));
             $validate = validate([
                 'module' => 'require|max:64',
-                'video'  => 'fileSize:157286400|fileExt:mp4'
+                'video'  => "fileSize:$max_size|fileExt:mp4"
             ]);
             if (!$validate->check(['module' => $param['module'], 'video' => $file])) {
                 return error($validate->getError());
@@ -148,8 +150,9 @@ class Upload
         }
 
         try {
+            $max_size = strtobytes(env('ADMIN_API.MAX_ATTACHMENT_SIZE', '100mb'));
             $validate = validate([
-                'attachment'  => 'fileSize:104857600|fileExt:zip,rar,7z,doc,docx,xls,xlsx,csv,ppt,pptx,pdf,txt'
+                'attachment'  => "fileSize:$max_size|fileExt:zip,rar,7z,doc,docx,xls,xlsx,csv,ppt,pptx,pdf,txt"
             ]);
             if (!$validate->check(['attachment' => $file])) {
                 return error($validate->getError());